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  <title>Return the effective user ID of the current process</title>
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  <div id="layout-content"><div id="function.posix-geteuid" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">posix_geteuid</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">posix_geteuid</span> &mdash; <span class="dc-title">Return the effective user ID of the current process</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.posix-geteuid-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>posix_geteuid</strong></span>
    ( <span class="methodparam">void</span>
   ) : <span class="type">int</span></div>

  <p class="para rdfs-comment">
   Return the numeric effective user ID of the current process. See
   also <span class="function"><a href="posix_getpwuid.html" class="function">posix_getpwuid()</a></span> for information on how
   to convert this into a useable username.
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.posix-geteuid-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the user id, as an <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.posix-geteuid-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4336">
    <p><strong>Example #1 <span class="function"><strong>posix_geteuid()</strong></span> example</strong></p>
    <div class="example-contents"><p>This example will show the current user id then set the
    effective user id to a separate id using
    <span class="function"><a href="posix_seteuid.html" class="function">posix_seteuid()</a></span>, then show the difference between
    the real id and the effective id.</p></div>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">posix_getuid</span><span style="color: #007700">().</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//10001<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">posix_geteuid</span><span style="color: #007700">().</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//10001<br /></span><span style="color: #0000BB">posix_seteuid</span><span style="color: #007700">(</span><span style="color: #0000BB">10000</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">posix_getuid</span><span style="color: #007700">().</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//10001<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">posix_geteuid</span><span style="color: #007700">().</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//10000<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.posix-geteuid-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="posix_getpwuid.html" class="function" rel="rdfs-seeAlso">posix_getpwuid()</a> - Return info about a user by user id</span></li>
    <li class="member"><span class="function"><a href="posix_getuid.html" class="function" rel="rdfs-seeAlso">posix_getuid()</a> - Return the real user ID of the current process</span></li>
    <li class="member"><span class="function"><a href="posix_setuid.html" class="function" rel="rdfs-seeAlso">posix_setuid()</a> - Set the UID of the current process</span></li>
    <li class="member">POSIX man page GETEUID(2)</li>
   </ul>
  </p>
 </div>

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